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931a6de4 SG |
1 | /* |
2 | * Copyright (c) 2015 Mellanox Technologies. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms and conditions of the GNU General Public License, | |
6 | * version 2, as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | */ | |
13 | ||
14 | #ifndef _LINUX_NVME_RDMA_H | |
15 | #define _LINUX_NVME_RDMA_H | |
16 | ||
17 | enum nvme_rdma_cm_fmt { | |
18 | NVME_RDMA_CM_FMT_1_0 = 0x0, | |
19 | }; | |
20 | ||
21 | enum nvme_rdma_cm_status { | |
22 | NVME_RDMA_CM_INVALID_LEN = 0x01, | |
23 | NVME_RDMA_CM_INVALID_RECFMT = 0x02, | |
24 | NVME_RDMA_CM_INVALID_QID = 0x03, | |
25 | NVME_RDMA_CM_INVALID_HSQSIZE = 0x04, | |
26 | NVME_RDMA_CM_INVALID_HRQSIZE = 0x05, | |
27 | NVME_RDMA_CM_NO_RSC = 0x06, | |
28 | NVME_RDMA_CM_INVALID_IRD = 0x07, | |
29 | NVME_RDMA_CM_INVALID_ORD = 0x08, | |
30 | }; | |
31 | ||
3ee80c3d MG |
32 | static inline const char *nvme_rdma_cm_msg(enum nvme_rdma_cm_status status) |
33 | { | |
34 | switch (status) { | |
35 | case NVME_RDMA_CM_INVALID_LEN: | |
36 | return "invalid length"; | |
37 | case NVME_RDMA_CM_INVALID_RECFMT: | |
38 | return "invalid record format"; | |
39 | case NVME_RDMA_CM_INVALID_QID: | |
40 | return "invalid queue ID"; | |
41 | case NVME_RDMA_CM_INVALID_HSQSIZE: | |
42 | return "invalid host SQ size"; | |
43 | case NVME_RDMA_CM_INVALID_HRQSIZE: | |
44 | return "invalid host RQ size"; | |
45 | case NVME_RDMA_CM_NO_RSC: | |
46 | return "resource not found"; | |
47 | case NVME_RDMA_CM_INVALID_IRD: | |
48 | return "invalid IRD"; | |
49 | case NVME_RDMA_CM_INVALID_ORD: | |
50 | return "Invalid ORD"; | |
51 | default: | |
52 | return "unrecognized reason"; | |
53 | } | |
54 | } | |
55 | ||
931a6de4 SG |
56 | /** |
57 | * struct nvme_rdma_cm_req - rdma connect request | |
58 | * | |
59 | * @recfmt: format of the RDMA Private Data | |
60 | * @qid: queue Identifier for the Admin or I/O Queue | |
61 | * @hrqsize: host receive queue size to be created | |
62 | * @hsqsize: host send queue size to be created | |
63 | */ | |
64 | struct nvme_rdma_cm_req { | |
65 | __le16 recfmt; | |
66 | __le16 qid; | |
67 | __le16 hrqsize; | |
68 | __le16 hsqsize; | |
69 | u8 rsvd[24]; | |
70 | }; | |
71 | ||
72 | /** | |
73 | * struct nvme_rdma_cm_rep - rdma connect reply | |
74 | * | |
75 | * @recfmt: format of the RDMA Private Data | |
76 | * @crqsize: controller receive queue size | |
77 | */ | |
78 | struct nvme_rdma_cm_rep { | |
79 | __le16 recfmt; | |
80 | __le16 crqsize; | |
81 | u8 rsvd[28]; | |
82 | }; | |
83 | ||
84 | /** | |
85 | * struct nvme_rdma_cm_rej - rdma connect reject | |
86 | * | |
87 | * @recfmt: format of the RDMA Private Data | |
88 | * @fsts: error status for the associated connect request | |
89 | */ | |
90 | struct nvme_rdma_cm_rej { | |
91 | __le16 recfmt; | |
92 | __le16 sts; | |
93 | }; | |
94 | ||
95 | #endif /* _LINUX_NVME_RDMA_H */ |